| 发明名称 |
Tunnel linings |
| 摘要 |
<p>A concrete segment 1 for a tunnel lining of reduced weight has a hollow interior between its inner and outer walls which is filled with a filling material 3, such as foam plastics material, having a density less than concrete. The segment may be formed by casting concrete around a solid block of the filler material in a mould. <IMAGE></p> |
| 申请公布号 |
GB2126630(A) |
申请公布日期 |
1984.03.28 |
| 申请号 |
GB19830023089 |
申请日期 |
1983.08.26 |
| 申请人 |
* FAIRCLOUGH CIVIL ENGINEERING LIMITED |
发明人 |
CHRISTOPHER RICHARD GRADWELL * SMITH;CHARLES WILLIAM * FORRESTER |
| 分类号 |
E21D11/08;(IPC1-7):21D11/08 |
主分类号 |
E21D11/08 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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